Suppose that you receive a letter with 7 names on it with the following instructions.
A) send a golf ball to the person on the top of the list.
B) rewrite the list without the top person’s name & with your name on the bottoms of the list.
C) make 12 copies of the list & these instructions & send them to 12 of your friends.
If everybody obeys their letters, how many gold balls will you eventually receive?

The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr